Abstract: The Helicoverpa zea transcriptome was analyzed 24 h after H. zea larvae fed on artificial diet laced with Helicoverpa zea single nucleopolyhedrovirus (HzSNPV). Significant differential regulation of 1,139 putative genes (p < 0.05 T-test with Benjamini and Hochberg False Discovery Rate) was detected in the gut epithelial tissue; where 63% of these genes were down-regulated and 37% of genes were up-regulated compared to the mock-infected control. Genes that play important roles in digestive physiology were noted as being generally down-regulated. Among these were aminopeptidases, trypsin-like serine proteases, lipases, esterases and serine proteases. Genes related to the immune response reacted in a complex nature having peptidoglycan binding and viral antigen recognition proteins and antiviral pathway systems down-regulated, whereas antimicrobial peptides and prophenoloxidase were up-regulated. In general, detoxification genes, specifically cytochrome P450 and glutathione S-transferase were down-regulated as a result of infection. This report offers the first comparative transcriptomic study of H. zea compared to HzSNPV infected H. zea and provides further groundwork that will lead to a larger understanding of transcriptional perturbations associated with viral infection and the host response to the viral insult in what is likely the most heavily infected tissue in the insect.
Keywords: Helicoverpa zea; HzSNPV; gut epithelium; microarray
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Noland, J.E.; Breitenbach, J.E.; Popham, H.J.R.; Hum-Musser, S.M.; Vogel, H.; Musser, R.O. Gut Transcription in Helicoverpa zea is Dynamically Altered in Response to Baculovirus Infection. Insects 2013, 4, 506-520.
Noland JE, Breitenbach JE, Popham HJR, Hum-Musser SM, Vogel H, Musser RO. Gut Transcription in Helicoverpa zea is Dynamically Altered in Response to Baculovirus Infection. Insects. 2013; 4(3):506-520.
Noland, Jeffrey E.; Breitenbach, Jonathan E.; Popham, Holly J.R.; Hum-Musser, Sue M.; Vogel, Heiko; Musser, Richard O. 2013. "Gut Transcription in Helicoverpa zea is Dynamically Altered in Response to Baculovirus Infection." Insects 4, no. 3: 506-520.